/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You under the Apache License, Version 2.0
 * (the "License"); you may not use this file except in compliance with
 * the License.  You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package com.feilong.lib.beanutils;

import java.beans.IntrospectionException;
import java.beans.PropertyDescriptor;
import java.net.URI;
import java.util.HashMap;
import java.util.Map;

import junit.framework.TestCase;

/**
 * Test class for {@code FluentPropertyBeanIntrospector}.
 *
 * @version $Id$
 */
public class FluentPropertyBeanIntrospectorTestCase extends TestCase{

    /**
     * Puts all property descriptors into a map so that they can be accessed by
     * property name.
     *
     * @param descs
     *            the array with descriptors
     * @return a map with property names as keys
     */
    private static Map<String, PropertyDescriptor> createDescriptorMap(final PropertyDescriptor[] descs){
        final Map<String, PropertyDescriptor> map = new HashMap<String, PropertyDescriptor>();
        for (final PropertyDescriptor pd : descs){
            map.put(pd.getName(), pd);
        }
        return map;
    }

    /**
     * Convenience method for obtaining a specific property descriptor and
     * checking whether it exists.
     *
     * @param props
     *            the map with property descriptors
     * @param name
     *            the name of the desired descriptor
     * @return the descriptor from the map
     */
    private static PropertyDescriptor fetchDescriptor(final Map<String, PropertyDescriptor> props,final String name){
        assertTrue("Property not found: " + name, props.containsKey(name));
        return props.get(name);
    }

    /**
     * Tries to create an instance without a prefix for write methods.
     */
    public void testInitNoPrefix(){
        try{
            new FluentPropertyBeanIntrospector(null);
            fail("Missing prefix for write methods not detected!");
        }catch (final IllegalArgumentException iex){
            // ok
        }
    }

    /**
     * Tests whether correct property descriptors are detected.
     */
    public void testIntrospection() throws IntrospectionException{
        final PropertyUtilsBean pu = new PropertyUtilsBean();
        final FluentPropertyBeanIntrospector introspector = new FluentPropertyBeanIntrospector();
        final Map<String, PropertyDescriptor> props = createDescriptorMap(pu.getPropertyDescriptors(FluentIntrospectionTestBean.class));
        PropertyDescriptor pd = fetchDescriptor(props, "name");
        assertNotNull("No read method for name", pd.getReadMethod());
        assertNotNull("No write method for name", pd.getWriteMethod());
        fetchDescriptor(props, "stringProperty");
        pd = fetchDescriptor(props, "fluentProperty");
        assertNull("Read method for fluentProperty", pd.getReadMethod());
        assertNotNull("No write method for fluentProperty", pd.getWriteMethod());
        pd = fetchDescriptor(props, "fluentGetProperty");
        assertNotNull("No read method for fluentGetProperty", pd.getReadMethod());
        assertNotNull("No write method for fluentGetProperty", pd.getWriteMethod());
    }

    public void testIntrospectionCaps() throws Exception{
        final PropertyUtilsBean pu = new PropertyUtilsBean();

        final FluentPropertyBeanIntrospector introspector = new FluentPropertyBeanIntrospector();

        final Map<String, PropertyDescriptor> props = createDescriptorMap(pu.getPropertyDescriptors(CapsBean.class));

        PropertyDescriptor aDescriptor = fetchDescriptor(props, "URI");

        assertNotNull("missing property", aDescriptor);

        assertNotNull("No read method for uri", aDescriptor.getReadMethod());
        assertNotNull("No write method for uri", aDescriptor.getWriteMethod());

        assertNull("Should not find mis-capitalized property", props.get("uRI"));
    }

    public static final class CapsBean{

        private URI mURI;

        public URI getURI(){
            return mURI;
        }

        public void setURI(final URI theURI){
            mURI = theURI;
        }
    }
}
